// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_SINK_H_
#define CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_SINK_H_

#include "base/compiler_specific.h"
#include "content/common/content_export.h"
#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"

namespace content {

// MediaStreamSink is the base interface for MediaStreamAudioSink and
// MediaStreamVideoSink. It allows an implementation to receive notifications
// about state changes on a blink::WebMediaStreamSource object or such an
// object underlying a blink::WebMediaStreamTrack.
class CONTENT_EXPORT MediaStreamSink {
public:
    virtual void OnReadyStateChanged(
        blink::WebMediaStreamSource::ReadyState state) { }
    virtual void OnEnabledChanged(bool enabled) { }
    virtual void OnContentHintChanged(
        blink::WebMediaStreamTrack::ContentHintType content_hint) { }

protected:
    virtual ~MediaStreamSink() { }
};

} // namespace content

#endif // CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_SINK_H_
